Rudolph faas and herbert s



No. 607,006. y Patented luly 5, |898.

. R. FAAS & H. S. GRAY.

ARMOR FOR PNEUMATIC TIRES.

(Application led May 9, 1898.) (No Model.)

C.) l? i i am.. 0 #mi Mm .Vl 'wie L| IINTTED STATES RUDOLPH FAAS ANDHERBERT S. GRAY, OF CHICAGO, ILLINOIS, ASSIGNORS TO THE NO-PUNOTUREYTIRECOMPANY, OF SAME PLACE.

ARMOR FOR PNEUMATIC TIRES.

SPECIFCATION forming part of Letters Patent No. 607,006, dated July 5,1898.

Application filed May 9, 1898. Serial No. 680,209. (No model.)

To all whom 7225 mayconcern:

Be it known that we, RUDOLPH FAAS and HERBERT S. GRAY, citizens of theUnited States, residing at Chicago, county of Cook, and State ofIllinois, have invented a new and useful Improvement in Armors forPneumatic Tires, ot' which the following is a specification.

Our improvement relates to that class of tires that are inflatable andmay be composed of an outer casing and an inner inflatable tube or maybe applied to a tire composed of a single tube as a means for protectingthe tire from injuries incident to puncture.

Our objects are to provide an impenetrable fabric that if placed betweenthe inner tube and outer casing will protect the inner tube from injuryor if placed in the tube of a singie tire will resist the attack ofexternal objects that would otherwise pierce the inflatable tire andcause it to collapse. This armor insertedl in any tire does not injureor abrade the walls of the tire, nor does it affect the life orresiliency of the tire or add materially to its weight.

The device is illustrated in the accompanying drawings, in which- Figurelis a transverse section of a tire containing the armor. Fig. 2 is asection of the armor with a portion of one of the strips removed. Fig. 3is a plan view showing the manner of cutting the strips.

Similar letters refer to similar parts throughout the several views.

In the construction of the armor we use an impenetrable fabric which iscut into strips about six inches in length by' one and a half or twoinches in width, the width being regulated by the size of the tire andvaries accordingly. These strips are then cut and articulated, as shownby Fig. 3. The strip A side being in line with and opposite each otherand about one and one-half to two inches apart, thus leaving a solid orunbroken central strip. The strip B is cut transversely at intervals ofone and one-half to two inches, as d e f, corresponding with theincisions in the strip A. These transverse cuts d e f extend inwardlyabout one-fourth of an inch from the two edges of the strip. The lateralincisions in the strip-A and transverse cuts in the strip B are alldirectly opposite each other, leaving in both strips unbroken centralstrips. The strips A and B, prepared as above described, are then joinedtogether to double the thickness of the armor by inserting the portionsc' t' i of the strip B through the incisions a b c in the strip A, asshown in Fig. 2.

rIhe strips in the construction of the armor are so arrangedjthat thethird joint in the first strip overlaps the second, so as to connect thethird strip, and so continues consecutively until a sufficient lengthhas been constructed to complete the tire, when the last joint of thelast strip is brought around to connect with the first joint of thefirst strip, thus completing the armor. The incisions a b c in the stripA are just a trifie longer than the cut portions in the strip B to allowa slight longitudinal expansion or movement. The armor thus constructedis then given a coat of rubber paint to fill the interstices or web ofthe fabric. The armor C thus prepared is inserted between the innerinflatable tube and outer casing, so as to protect the tread of thetire. The armor may also .be arranged to be placed in a singleinflatable tube, if desired, by means of a rubber casing attached to theinner walls of the tube. Having thus described our invention, what weclaim as new, and desire to protect by Letters Patent, is

l. In an armor for pneumatic tires an impenetrable fabric cut into shortnarrow strips joined together consecutively by'lateral incisions nearthe edges at regular intervals at points opposite Aeach otheralternately with similar strips cut transversely from the edges towardthe center to permit the portions of the edges of the latter to beinserted into the cut edges of the strip B, to be inserted thereroincisions of the former, the joints overlapping in, the strips A, and B,alternately overlapas described. ping, substantially as described.

2. In an armor for pneumatic tires, ashort A narrow strip A, of fabrichaving lateral in- AGAIY csions at opposite points near the edges, astrip B, having short transverse incisions XVitnesses: from the edgestoward the center, the inci- II. C. IIUNSBERGER,

sions in the strip A, adapted to permit the S. G. VAN GILDER.

